cooper



. (No Model.)

J. WALTER.

METAL ROOFING PLATE.

Patented Apr. 4, 1832.

INVENTOR 0%?35 ATTORNEYS.

. WITNESSES MMZ/ZMZ 71% W I -2 /D UNITED STATES.

PATENT @FFICE.

JOHN WALTER, ()F NASHVILLE, TENNESSEE, ASSIGNOR TO HIMSELF. AND CHARLES B. COOPER, OF SAME PLACE.

METAL ROOFING-PLATE.

SPECIFICATION forming part of Letters Patent No. 256,083, dated April 4, 1882.

Application filed December 29, 1881. (No model.)

To all whom it may concern:

Be it known that I, JOHN \VALTER,ot' Nashville, in the county of Davidson and State of Tennessee,'nave invented a new and useful Improvement in Metal Roofing, of which the folis a full, clear, and exact description, reference being bad to the annexed drawings, forming part of this specification.

This invention relates to metal plates for rooting houses; and it consists of a plate possessing novel features of construction, as will be hereinafter described.

In the accompanying drawings, Figure 1 shows the manner of applying my improved :5 plates to the roofof a house ;-and Fig. 2 is a sectional view of two plates on line as a, Fig. 1.

The plate A, which is to be of any desirable size, is formed with two para-llel corrugations, a a, near one of its lateral edges, so constructed that the inner corrugation, a, shall serve as a catch to hold another plate to be placed at the side thereof, and the outer corrugation, a, shall form, together with the inner one, a gut- ,ter, 1), for carrying 011' any water that may en- 2 5 ter the seam. Adjacent to the outer corrugation, a, is a flange, I), having suitable perforations, by which the plate is to be nailed to the boards of the roof. The opposite lateral edge of the plate is formed with a single broad cor- 0 rngation, 0, adapted to cover the corrugations and gutter ot'its adjacent plate similar to those above described, and the extreme edge of the plate adjacent to the corrugation c is bent under to form a catch, 0, which is to engage with the inner corrugation, a, of its adjacent plate. With this construction the broad corrugation c of one plate overlaps the gutter b and corrugations a a of its adjacent plate, and forms therewith a water-proof seam. The plates are 40 to be laid in horizontal layers, the upper layer overlapping the next lower one, and to prevent the effects of capillary attractionbctween two overlapping plates the upper end of each plate is provided with a horizontal corruga- 5 tion, 6, extending across nearly tothe lateral corrugations, and at such a distance from the extreme top edge of the plate that the lower end of the plate overlapping it shall form a seam therewith. The corrugation e prevents the two overlapping plates from lying close together, and thus prevents theaction of capillary attraction, and by means of an upward inclination given to the upper edge of the plate any water passing up between the plates is prevented from flooding the'seam. The lower edge of each plate is formed with a downward inclination, which fits below the corrugation e at the upper end of the plate which it overlaps. With this construction a seam is formed between an upper and a lower plate, in which the horizontal corrugation and upward inclination of the upperedge of thelower plateoft'er two barriers to the passage of water through the seam, and at the same time form an open space between the plates to prevent capillary attraction.

As a further means of protecting the horizontal seams from flooding, each plate is constructed with-a central corrugation, 0, having the shape of an inverted Y, and a corrugation, 7o

6 having the shape of an arrow-head, located between the bifurcations of c, with the point inward; When one plate is arranged above another to form a scam the arrow-head of the upper plate forms a continuation of the Y- shaped corrugation ot' the lower plate, and the said corrugations thus serve to guide the water to the right and the left hand sides of the plate to the gutters, where flooding is less liable to en'sue than at the central part of the hori- 8o zontal seams, where there are no gutters. The horizontal corrugations will serve as a gageline for laying the plates.

Having thus described my invention, what I claim as new, and desire to secure by Letters 8 Patent, is-

1. The combination of two sheet-metal root'- ing-plates adapted to be arranged with other similar plates in horizontal overlappiu g layers, and formed at their lapping horizontal edges, 0 substantially as shown, to constitute a transverse anti-capillary seam, and provided with central longitudinal corrugations fitting one upon the other across the transverse seam at right angles, and formed to divert the water 5 and direct it toward theside edges of the plate, substantially as shown and described.

2. A sheet-metal roofing-plate having one of its lateral edges formed with two parallel corrugations to form a gutter, and the other lateral edge formed with a broad corrugation adapted to make a scam with the corrugations and a cap for the gutter of acorresponding platc, substantiallv as shown and described.

3. A sheet-metal roofing-plate having a gutter formed by corrugations at one side and a perforated flange at the side of the gutter, wherebyit shall he nailed to the roof ofa house, and abroad corrugation att'ne other side adapted to form a seam with the adjacent edge of a corresponding plate, substantially as shown and described.

4. The combination of two sheet-metal roof: 15

ing-plates, each having corrugations shaped like an inverted Y and an arrow-head, and so arranged that the arrow-head corrugation of one plate shall form a continuation of the Y-shaped corrugation of the other, substantially as shown 2 o Dr. W. H. WHITTEMORE, G. E. EUBANK. 

